Transparent slide and process of making the same.



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JUHN PATRICK FERRITER, QF,,1VIIAMI, FLORIDA.

No Drawing.

To all whom it "my concern:

lle it known thatv 1, JOHN PATRICK FER- Rrrnn, a citizen of the United States, and resident of Miami, in the county of Dade and State of Florida, have invented certain new and useful Improvements in Transparent Slides and Processes of Making the Same; and I do hereby declare the following to be a full, clear, and exact descrip tion of the invention, such as will enable others skilled in-the art towhich it appertainsto make and use the same.

This invention relates to improvements in transparent stereopticon slides and the proc ess of preparing the same, the object of the intention being to provide a simple and efiicient manner of transferring to a slide, ex act reproductions of written or other matter, and to so treat the glass of which the slide is composed that such transfer may be easily and quickly efi'ected, and so that the finished slide shall be transparent.

\Vith this object in View, the invention consists in certain features as hereinafter set forth and pointed out in the claim.

In prepiiring the slide, a solution consisting of banana oil (ainylacetate with cellulose nitrate) approximately ninety-five per cent. and white shellac varnish approximately five per cent. is poured onto a glass plate and allowed to dry, which will require approximately thirty minutes. The plate thus treated is in condition to receive the reprodiiiotion of written, printed or other matter which it may be desired to transfer thereto. written, printed or other copy will next be Specification of Letters latcnt.

The

Patented m 2, or

Application filed July 30, 1914. Serial No. 854,207.

placed face down on the treated surface of the glass. A cloth moistened with alcohol will then be laid overthe copy and a sheet of blotting paper will be placed over the cloth. The whole will now be subjected to light even pressure (which may be conveniently padded letter press) for about one minute.- When the slide shall have been removed from the press, the treated side of said slide will contain an exact reproduction or the and to render it transparent, the film therein must be clarified and for this purpose, daininar varnish has been found to be most eiiici ent.

In applying the clearing liquid, the same will be poured onto the treated face so as ,to'cover the film, permitting the liquid to When dry, the slide and dry film resulting from a mixture of banana oil and shellac.

In testimony whereof, I have signed-this specification in the presence of two subscribing witnesses JOHN PATRICK FERR-ITER.

Witnesses 'W. A. MCDONALD,

W. D. KERRY.

accomplished with the use of a J copy. The slide willnow' be translucent till 

